Machine for reseating valves, &amp;c.



T. B. WILLIAMS. MACHINE FOR-RBSEAT ING VALVES, duo. APPLIOATION FILEDJAN; '17, 1906.

918,805. Patented Apr. 20, 1909.

4 SHEETS-SHEET 1.

I. 1s. WILLIAMS. MACHINE FOR RESEATING VALVES, 6w.

APPLICATION FILED JAN. 17, 1906.

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rut NORRIS PETERS cm, wnsumarcn, c.

moms r011 RESEATING VALVES, 6m.

APPLIQATION FILED JAN-17, 1906.

91 8,805. Patented Apr. 20, 1909.

.4 SHEETS-SHEET 3.

IIIIIIIIIII m a I i i K k i Inventor.

1 1n: NORRIS FEYERS ca, wAsnmm-ou. n. c.

T. B. WILLIAMS. MACHINE FOR RESBATING VALVES, 6w. APPLICATION FILED JAN.17, 1906.

Pate ntedApr. 20, 1909.

'4 SHEETS-SHEET 4.

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1H: NORRIS P215025 50.. WASHINGTON, A C.

stirs srarnnr FREE.

THOMAS B. WILLIAMS, OF ORANGE, MASSACHUSETTS, ASSIGNOR TO LEAVITTMACHINE COMPANY, OF ORANGE, MASSACHUSETTS/A CORPORATION OFMASSACHUSETTS.

rancnrnn For. nnsnn'rrne- VALVES, &c.

Specification of Letters Patent.

Patented April 20, 1909.

Application filed. January 17, 1906. Serial No. 296,442.

To all whomjt may concern: if

Be it known that I, THOMAS B. WILLlAMS, a citizen of the United States,and a resident of Orange, in the county of Franklin and State ofMassachusetts, have invented certain new and useful Improvements inMachines for Reseating Valves, &c. of which the following is aspecification.

This invention relates to an improved machine for reseating valves, etc,and the rincipal object of the invention is to provi e an improvedmachine of this character by means of which the truingup or facing ofvalves and valve-disks of all kinds can be 2: readily accomplished, andwhich will also be capable of operating in a similar or analogous mannerupon'other work.

Various machines of this general character have been designed and are ingeneral use. My im rovements thereover relate-more particular y to amachine of this character in which the tool and tool-holderhave a widerrange of movement and adjustability than has been the case heretofore,this'range bein such in my improved machine that the too and thetool-holder are practically universally movable with respect to thework. This result is preferably accomplished by mounting the'toohholderon an arm carried by the standard which supports the work-holder andhaving its axis extending in substantially the same direction as theaxis of the work-holder, the tool-holder being mounted on this arm insuch a manner as to be movable about the axis thereof, and preferably inall other directions in which movement of the tool is desirable. In thepreferred construction the arm which extends from the standard thatsupports the work-holder has its longitudinal axis parallel with that ofthe work-holder and carries a tail-support on which the tool-holder ismounted and on which it may have all necessary adjustments and feedmovements. This tail-support may be located outside of and beyond thetailstock by means of which the work is supported, both the tail-stockand the tail-su port being preferably mounted 011 and a justable alongthe same arm.

Other features of my invention which re tion of the tool, and variousother matters, will be hereinafter described, and are illustrated in theaccompanying drawings, in which Figure l is a sectional elevation of acomplete reseating machine constructed in accordance with my resentinvention and illustrating the parts in position for operating upon avalve-disk Fig. 2 is a plan of the same showing various adjustments ofthe tool-- holder and its feed-slide on the tail-support; Fig. 3 is anenlarged transverse section and end elevation of the tail-stock and thetailsupport, with the parts mounted thereon, as seen from the right inFig. 1 Fig. 4 is a sectional detail of the same, the section being takenin the line 4--4, Fig. 3, looking in the direction of the arrow Fig. 5is a detail of the means for feeding the tool in a curvilinear path or arectilinear path, as desired Figs. 6 and 7 are details of the means foreffecting a quick or a radual adjustment of the osition of the too-holder; Fig. 8 is a detai corresponding to Fig. 5 and showing thepositions of the tool-slide and cooperative parts when a rectilinearmovement of the tool is desired.

Similar characters designate like parts in all the figures of thedrawings.

All of the various parts of the machine except the tail-support and thedevices carried thereby may be of well-known construction,

and as shown are substantially similar to cor responding parts ofsimilar machines now in '2 depending therefrom for engagement betweenthe'jaws of a bench-vise 3 in the wellknown manner, although of coursean indeendent supporting frame may be used.

he ring 1 is internally threaded for engagement by the correspondinglythreaded gripping jaws 5 of a chuck 4 through which passes a work-sindle 6 having at one end a work-holding c uck 7 and at its other endmeans for turning the work-s indle. The chucks 4 and 7 may be of simi arconstruction, each having a knurled adjusting collar for the purpose ofshifting the grippin jaws 5 and 8 radially. These adjusting cofiars areindicated at 9 and 10. These chucks being of well-known construction,and the means for s readin and drawing in the gripping jaws eing old andwell known, these parts will not be further described. 1

The work-spindle 6 is journaled in the chuck body and also passesthrough a hub 1 1 constituting an extension of said chuck body. This hubis split for a considerable distance at its outer end and is bothexternally and internally threaded at such end. an internal bore ofconsiderably greater diameter than the diameter of the work-spindlewhere the spindle passes through such hub, a sleeve, which constitutes abushing or bearing for the spindle, being located between the spindleand the hub 11 throughout the length of said hub. This intermediatesleeve, which is designated by 12, is externally threaded and terminatesat its outer end in a handwheel 13 by means of which the sleeve 12 isturned. The external threads of said sleeve engage with the internalthreads of the hub 11, and when the hand-wheel 13 is turned the sleeve12 will be shifted longitudinally in one direction or the other. Thework-spindle 6 is reduced in diameter where it passes through the sleeve12, and the inner end of said sleeve is stopped by a washer 1 1 abuttinagainst the stop-wall separating the different diameters of thework-spindle, the outer end of the sleeve 12 being stopped by the hub ofa second hand-wheel 15 secured to the end of the work-spindle by alock-nut 16,

' said hand-wheel being intended to turn said spindle. A detachablecrank 17 is provided for reducing the labor of turning the workspindlewhen a piece ofworlr is being faced by the tool. From the constructionof the parts just described it will be seen that wlzne the sleeve 12 andthe worl'-spindle 6 are free to turn relatively to each other, they haveno relative longitudinal movement. The WOl'lC- spindle is, however,adjusted longitudinally by means of the sleeve 12, this being e'flectcdby turning the hand-wheel 13 to the right or the left as desired to feedthe WOI'li up to or withdraw it from the tool. When the spin- (lle 6 isin proper working position it may be locked against further lengthwisemovement by means of a locking collar 18 internally threaded andengagingthe external threads at the end of the sleeve 11. This collar wien turned to the right draws together the split sections at thethreaded end of the hub 11 and locks the hub 11 and the sleeve 12together, so that the hand-wheel 13 and the sleeve 12 can not be turned.

All of the usual parts of a valve-reseating machine, especially asadapted for facing a valve-disk, such as (Z, have now been described,with the exception of the tail-stool; and the arm by which thetail-stock is supported. This tail-stock is shown at 19 and may be ofany suitable or usual construction adapted to be secured to an armextending from the standard formed by the ring and lug l and 2. This armprojects from said standard in such a manner that its longitudinal axisextends in the same general direction lt also hasas, and is preferablyparallel with, the longitudinal axis of the work-holder and workspindle.is here shown, this arm is a rod 20 having a journal surface on whichthe parts carried by the arm may be turned to dill'crent positions aboutthe axis of said arm.

The principal novel parts of my improvcd machine are embodied in a tailsupport carried by the arm 20. In the construction shown thistail-support is located outside of, that is, beyond, the tail-stock 1S)and its center-pin 19. The tail-support as a whole may be turned on thejournal surface of thc arm 20 to various positions, and it may beclamped in place in any position to which it may be turned. The mainelement of this tail-support is a bracket-arm 21 having a divided hubwhich may be securely fastened to the arm 20 by a clamping-screw 22.This bracket-arm constitutes a guide on which the other parts of thetail-support may be adjusted toward and from the axis of thework-holder. The principal element of thc tail-support, which is movablewith rcspcct to the bracket-arm, is a block clamping-screw 25, the shankof which passcs through a long slot 23 in the bracket-arm 21. This blockmay be slid to any desired position on the bracket-arm, and when,located may be clamped in place by the screw 25. The block 24 issubstantially T-shaped in elevation, and the head of the block forms asubstantially semi-circular table on which rests a similarly shapedplate 26 constituting the principal element of a swivel by means ofwhich the tool-holder and other parts may be adjusted about an. axisperpendicular to a plane in which the axis of the work-holder lies. Theedges. of the plate 26 and the table of the block 24 may be indexed, ifdesired, in order to obtain an accurate angular adjustment or indexingmovement of the swivel and tool-holder with respect to the block 2!.Normally the movement of the plate 26 of the swivel is confined to anare limited by a pair of stops 27 and 28 set in the edge of the table ofthe block 24, a stop 21) on the plate 26 normally working between saidstops. However, a greater range of i'novement may be had wheneverdesired by raising thcplato 26 from the table of the block 24 andturning said plate until the stop 29 is outside of the stops 27 and 28.This may be accomplished by loosening to the proper extent a lock-nut 30at the threaded lower end of a bolt 31 journalcd in a vertical b airingin the block 24 and normally serving to clamp the plalc 26 and the block24 together. his will be obvious by referring to F 4. This bolt 31constitutes the vertical pivot about which. the swivel and the partssupportml thereby turn.

At its upper side the swivel-plate 26 has an undercut gnideway in whichis supported a substantially oblong slide-block 32. This 24 lmving a lIUslide-block may be shifted to any desired position on the plate 26 andclamped in place by a set-screw 33 and a gib 34. Said block constitutesthe other main element of the swivel, which, as shown, is a two-partswivel having a block or head adjustable with. respect to the mainportion or plate of the swivel.- The slide-block is formed at its upperand lower sides with beveled ways, such as 35 and 36, which coact withcorresponding guideways or grooves, the ways 35 coacting with those ofthe channel in the upper face of the plate 26, while the ways 36 coactwith corresponding beveled Ways of a channel in the under side of afeed-slide mounted on and movable longitudinally of the slide-block 32.p This feedslide is designated generally by 87. It is adapted to be fedgradually along the ways 36 of the slide-block 32 for the purpose of imparting the proper feed movement to the cutting tool. Any suitablefeeding means may be employed for this purpose, but 1 prefer to make useof afeed-screw, such as38,

ofthe well-known type, journaled at one end in one end of theslide-block and at its other end in a plate 39 which is here shownasscrewed to the other end of the slide-block. A hand-wheel 40 is securedto one end of the feed-screw for the purpose of turning the same. Themeans for imparting the rotary movement of the feed-screw to thefeedslide as a longitudinal movement of the latter is here shown as ablock 41 screw-threaded at its inner edge and mounted to slide back andforth in a rectangular opening in the feed-slide in a directiontransverse to the feed-screw. The object of this is to effect the usualgradual feed of the feed-slide when the block 41 is coupled to thefeed-slide while permitting a quick adjustment of the feed slide to anydesired position whenever the feed-screw and said block are disengaged.For the purpose of effecting the connection and disconnection of thesetwo parts I have shown a lever having its pivot in a rocle shaft 42 onthe feed-slide and having a short arm 43 which depends into a recess 45in the upper side of the block 41, the long arm 44 of said leverprojecting outside the feed-slide and constituting the means for turningthe rock-arm 42. The arm 44 of this device, as shown in Fig. 7, isnormally at one side of a stop 46 on the feed-slide, and in suchposition couples the feed-screw and the block 41. Said lever, however,is sufficiently resilient to be sprung to the other side of said stop,and when in such position uncouples the block 41 from said feed-screw.The feedslide also supports a cross-feed tool-slide, which is designatedgenerally by '47. This tool-slide is mounted in a transverse dovetailchannel in the upper side of the feedslide. Normally said tool-slide hasno crossfeed movement and is so held that its only movement is a feedmovement in unison with V are defined by arcs of different circles.

the feed-slide 37. At such a time the position of the t0ol-slide is thatindicated in Fig. 8, in which the tool-slide is shown as drawn out tothe extreme right-hand end of its range of transverse movement on thefeedslide. In order to hold. the tool-slidc in that position astop ordetent in the form of a swinging-latch 48 is mounted on the toolslide,this latch being movable into engagement with a stop-wall on thefeed-slide. The stop-wall shown is the head of an adjustingscrew 49,which is screwed directly into the feed slide transversely and at theunder side of its head presses against a pin 50 seated in a transversebore 51 in the tool-slide, which bore contains a coiled springencircling the shank of; said pin 50. By turning the adjusting-screw 49to the right or the left the tension of the spring 52 surrounding saidpin may be increased or decreased as desired. The function of thisspring, when properl tensioned, is to force the tool-slide to the left,as shown in Fig. 5, and the spring should be of .sufficient length andunder sufficient tension at all times to permit it to force saidtool-slide to its extreme position to the left as seen in said view.Normally, however, the tool-slide is pressed to the right, and when inits extreme right-handposition is latched there by swinging the latch 48down into contact with the wide head of the ad j usting-screw 49.

to be hooked over the shank of the screw 54 on the tool-slide whichconstitutes a sto for bracing the latch 48and holding it rigid y at aright angle to the tool-slide. 1 111611 said latchis swung up, as shownin Figs. 3, 4 and 5, the s ring 52 expands and instantly forces the too-slide 47 to the left, as seen in Fig. 5. When this occurs afollower-pin 55, which is seated in a longitudinal bore in thetool-slide, is brought into contact with a guide on the slide-block 32and determines the extent of movement of said tool-slide to the left, asshown in Fig. 5. The guide with which said pin comes in contact is hereshown as a metallic strip 56 secured by screws 57 to the upper surfaceof the slide-block in the direction ofthe length thereof. This guide asshown has one or more curvilinear guide-faces. One of these is indicatedat 58 and another is shown at 59. These two curved guide-fa icles 1eapproaches to said curved guide-faces are by way of straight cam faces,designated by 60. In the position shown in Fig. 5 the followerpin 55 1sin contact with one of these straight cam faces 60. As a feed movementis imparted to the feed-slide 37 on the turning oflower-pin is incontact. If said pin is in contact with the curved face 58 thetool-slide 47 and the cutting tool carried thereby will have a feedmovement corresponding to the curve which defines the face 58. If thefollower-pin is in contact with the face 59 the path of feed movement ofthe cutting tool will correspond to the curve defining the guide-face59. One or the other of these faces may be brought into action asdesired by releasing the screws 57, when either the guide-face 58 or theguide-face 59 may be presented toward the work and the guide thenclamped in place.

The tool-slide sup orts a tool-holder which is designated genera ly by61 and which has a swinging movement about a vertical axis passingthrough the tool-slide. This toolholder may be secured in differentpositions pivotally on the tool-slide and clamped handy in any angularposition to which it may be adjusted. For these purposes a clamp-screw62 passes through the toolholder into either one of a pair of tappedholes 64 in the tool-slide. When screwed home this screw holds-thetool-holder firmly in the desired angular position and also locks thecutting tool, which is indicated at c, to the tool-holder and thetool-slide.

As indicated by the full-line and dotted positions of the slide-block,etc., in Fig. 2, it will be seen that by means of a tail-support of thetype herein described a cutting tool may be adjusted to a great varietyof positions with respect to the work. be evident that all kinds ofangular faces may be cut or faced by my improved machine, whether saidfaces be straight, tapered or rounding. By mounting the parts in themanner described a very rigid support for the work and the tool isobtained, the tail-stock and the tail-support being mounted so closetogether on the same support that there is no chance for the parts tochatter and impair the accuracy of the cutting operation, which is amatter of great importance in reseating Valves and valve-disks.

lVhat I claim is:

In a machine of the character described, the combination with a rotarywork-holder, and with a standard for supporting the same, of an armextending from said standard and having an axis substantially parallelwith that of the work-holder, a tail-stock carried by said arm andcooperative with said workholder, and a tail-sup aort also carried bysaid arm beyond the tail-stock and embodying means lapping thetail-stock lengthwise of said arm for moving a tool into the plane ofand into engagement with the work.

Signed at Orange in the county of Franklin and State of Massachusettsthis 12th day of January A. D. 1906.

THOMAS B. WILLIAMS.

Witnesses JAMEs D. KIMBALL, FRED A. DEXTER.

It will also

